Cylinder grinder



March 21, 1933. .1. SUNNEN CYLINDER GRINDER Original Fi ed April 11,1930 5 Sheets-Sheet 5 R lie/22 0i dqx 510mm Patented Mar. 21, 1933UNITED STATES :osnrx summer, or sr. tours, nrssoum' mmnan mm Applicationfled April 11, 193i), Serial No. 443,298. Renewed March 11, 1932;

This invention relates generally to cylinder grinders or honing devicesand more particularly to dust collectors therefor.

Heretofore in grinding or honing cylin- 6 ders of internal combustionengines, pumps, and the like, generally no attempt has been made tocollect the dust and the latter was allowed to circulate in and aboutthe device;

operated upon. As this dust is composed of 10 fine particles of metaland the abrasive substance released during the honing operation, it isobvious that this practice is not conductive to the good health of theworkmen and is injurious to the machinery.

The primary purpose of my invention is to provide a dust collector whichcan be attached to and used in conjunction with the cylinder grinderwhereby the dust is collected and conveyed to a suitable receptacle.

Other objects of the invention are to provide a dust collector which isso constructed that it can be used in conjunction with a cylindergrinder without interfering with the operation of the latter and whichhas an intake head arranged so as to enclose the ported on the grinderwithout interfering with the operating connections thereof, there beinga fiexi le connection arranged between said conduit and the upper end ofsaid collector head so as to permit relative movement thereof incorrelation with the movement of said stem relatively to the grinder.

Further objects of the invention are to provide a dust collector havingits collector head arranged to enclose the grinder of the typedisclosed-in my copending application filed November 17 1927. Serial No.233,788, said collector head being provided with apertured walls throughwhich the element carrying mounts extend outwardly and said collector.head being provided with intake openings arranged in closeproximity tosaid cylinder engaging elements and the cylinder surfaces over whichsaid elements operate.

With these and other objects in View, my invention consists in certainnovel features of construction and arrangement of parts, hereon line 3-3of Figure 1.

Figure dis a horizontal cross section taken on line H of Figure 1.

Figure 5 is an enlarged vertical cross section through the dustcollector and showing the cylinder grinder arranged therein.

\ Figure 6 is a horizontal cross section taken on line 6-6 of Figure 5with the cylinder grinder shown in dotted lines.

Figure 7 is a horizontal cross section taken on line 7-7 of Figure 5with the cylinder grinder shown in dotted lines.

Figure 8 is a horizontal cross section taken on line 8-8 of Figure 5with the cylinder grinder removed.

Figure 9 is a side elevational view of a modified form of my invention.

Figure 10 is a horlzontal cross section taken on line 10-10 of Figure 9.

Figure 11 is a horizontal cross section taken on line 1111 of Figure 9.

The grinder or honing device in conjunction with which my dust collectoris designed to be used com rises a carrier member 10in which are slidaly mounted transverse members 11 of mounts 12. These mounts are disposedparallel with the longitudinal axis of carrier 10 and have arrangedthereon cylinder engaging elements 14. As shown herein certain of saidelements consist of abrasive members 14* and certain other consists ofnon-abrasive elements 14:". The transverse" members 11 are provided withrack portions 11 which are operatively engaged by an elon ated pinionmember 15. This pinion mem er is revolubly mounted and coaxiallydisposed in carrier 10 and is adapted to be actuated to ex and orretract said mounts relatively to tiie axis of member 10. The upper endof this pinion member projects above carrier 10 and is operativelyassociated with manually operable means 16 by means of which said pinioncan be operated to adjust said cylinder engaging elements, said means 16being self-locking to prevent accidental retraction of said elements.

The grinder is supported and actuated through a stem 17, the lower endof which is flexibly connected to the upper end of carrier 10 by meansof a yoke member 17 and a ring 17 b which have ivotal connection witheach other and whic ring 17" is pivotally mounted on the upper end ofsaid carrier. The upper end of stem 17 is adapted to be at: tached tothe chuck (not shown) of a suitable electric hand drill whereby saidgrinder can be moved longitudinally in the cylinder in which itoperates.

The general construction and operation of the grinder herein disclosedis substantially the same as that shown in the copending applicationhereinbefore mentioned, to which reference may be had for more detaileddescription.

The dust collector consists ofan intake head or casing 18 to the upperend of which is attached a reducer 19. The upper end of this reducer hasa flexible connection with the lower end of a vertically disposed airpipe 20. A flexible conduit 21 is attached to the free end of member 20by a collar 22 and extends therefrom and connects to a suitable.

exhaust device (not shown) whereby the dust is carried awa from therinder and deposited in a suita le receptac e. l

The intake head 18 consists of a top member 24, a bottom member 25, anda series of vertically disposed wall members 26 disposed between anduniting said top and bottommembers 24 and 25'. Top member 24 is in theshape of a collar to the lower edge of which are attached thehorizontally disposed top walls 26 of wall members 26. The bottom member25 is of circular shape and is provided with downwardly presentedmarginal flange 25 and is further provided with a central opening 25"through which the lower 1 end of carrier 10 projects downwardly.

Each wall member 26, of which there are four in the present instance,comprises a wall section 26", which is comparatively wide, and wallsection 26, which is comparatively narrow. Sections 26 and 26 aredisposed at right angles to each other with their inner edges joinedtogether and with their outer edges arranged flush with the peripheralsur-' faces of the top and bottom members 24 and 25. These outer edgesof each pair of sections 26 and 26 are joined together by a verticallydisposed segmental wall 27, the ends of which are connected to therespective members 24 and 25. Thus a series of outwardly presentedvertically disposed recesses or pockets A is formed on the outside ofthe intake of the respective mount extends inwardly intoo operative enagement with pinion 15. (See Figure 3.) has the cylinder engagingelements 14 can be adjusted without interference from the housing orintake head 18.

One pair of diametrically opposed segmental walls 27, namely, that pairarranged adjacent to the abrasive elements 14, is provided with aplurality of openings through which dust is sucked into the chamber B.The upper opening 29 is elongated and is vertically disposed adjacent tothe wall section 26 which is nearest the abrasive element 14. The lowerinlet opening 30 is comparatively wide and has one side disposedobliquely so that the opening at its lower end is nearly the width ofsaid segmental wall and opens against the bottom member 25. This openingtapers upwardly and the upper end thereof is spaced a suitable distancefrom the lower end of opening 29.

,flhe segmental walls arranged adjacent to the non-abrasive elements 14are provided withinlet openings 31 near the bottom member 25. tially thefull width of the segmental wall and are comparatively of small crosssectional area as compared with the openings 30. 7

When the device is actuated, the inlet openings 29, 30 and 31, beingarranged immediately in the rear of the abrasive elements, permit dustto be drawn into the chamber B through the action. of air currents whichare sucked thereinto by the exhaust device.

Wall sections 26 and 26 may be, formed either of one piece or may beformed of several pieces welded together. Similarly the ends of saidwall sections may be welded to the top and bottom menibers 24 and 25.

As shown in the drawings, the bottom mem ber 25 is secured in positionby means of extensions 32 which are formed integral with the lower endsof wall sections 26 and are extended through slots formed in member 25and are then bent against the underside thereof, as shown in Figure 8.However, various sections can be secured together in any other suitablemanner or the entire intake head can be cast in a single piece.

The top member 24 is provided with a reover the flared out lower end 20"of member 20 so that reducer 19 and member 18 can occupy slight angularposition with respect to member 20. p

The yoke member 17 extends upwardly through reducer 19 into the lowerend of member 20 and is secured to the lower end of stem 17. The latteris journaled in a hearing 32 which is disposed within member 20 and=hasits upper end projecting outwardly therefrom as indicated at 32. Thus aconvenient outlet is provided for stem 17 without impairing the exhaustcapacity of the device. Bearing 32 is arranged in coaxial alignment withmember20 and with carrier 10 so that stem 17 preserves proper operativerelationship with said carrier. The lower end f bearing 32 is preferablyengaged by a tie member 34 which extends transversely through saidmember 20 and serves to steady said bearing.

The vertically disposed leg of member 20 is provided on its outersurface with a vertically disposed bearing 35 in which is slidablyarranged a gauge 36, the lower end of which is bent at right angles asindicated at 37, while the upper end is provided with a suitable handle38 by means of which said gauge can be adjusted in vertical plane. Thehorizontal extension 37 is arranged so as to engage the top of acylinder andprovide a stop for the guide. Thus said gauge can beadjusted to limit the downward movement of the device when in thecylinder. The use of this gauge is desirable as with the dust collectorenclosing the grinder it is sometimes difiicult to observe the extent ofdownward movement of the device.

It is observed that the interior of member 10, namely, chamber B is incommunication with the exterior only through inlet openings 29, 30 and31. As said openings are in b close proximity with and immediately inthe rear of cylinder engaging elements 14, it is obvious that any dustor fine particles produced by the operation of the grinder will besucked into said chamber and thence through members 20 and 21 conveyedaway from the grinder. Thus the injurious dust instead of being releasedinto the atmosphere to be inhaled by the workman or cause injury to themachinery is exhausted from the cyl-o inder through the exhaustingsystem and deposited into a suitable receptacle. The suction apparatusor dust collector is so arranged that it does not interfere either withthe ma-- nipulation of the grinder or honing apparatus or with theeilicient operation of the cylinder engaging elements.

In the preceding form, a dust collector is shown which is designed foruse with grinders operating in cylinders of two inches or more indiameter. In Figures 9 to 11 a modified form is shown whichis adaptedfor use with grinders or honing apparatus for operation in cylindersless than two inches in diameter. In this form the intake head 39 isprovided with vertically disposed wall sections 40, each of whichconsists of a peripheral wall section 41, one edge of which is turnedinwardly as indicated at 42 and the opposite edge of which is first bentradially as indicated at 44 and is then bent so as to be disposed atright angles to edge 42, as indicated at 45. This portion 45 is providednear its ends with apertures 46 for receiving thetransverse members 11and is provided intermediate its ends with a cut-out portion 47 whichforms the inlet opening through which dust and air is sucked into theinterior of the intake member 39. Otherwise the constructionand'operation is substantially the same as in the preceding form.

To place the dust collector in position, stem 17 is inserted throughbearing 32 and the intake head 18 is placed over the carrier 10 fromwhich the mounts 12 have first been detached. After the intake head isin position the mounts 12 are returned in position with the transversemember 11 extending into the interior or chamber B through apertures 28with the mounts 12 and elements 14 occupying recesses A. When in thisposition the intake head is supported by the carrier 10 and member 20 issupported by stem 17 The reducer member 19 is disengageable from topmember 24 and slidable outwardly by member 20 in order to provide accessto the adjusting means 16 whereby \the elements 14 can be adjusted. Thisreducer. alsoprovides flexible connection between the intake head 18 andmember 20 so as to permit slight angular movement of said intakeheadrelatively to member 20 in correlation with the movement of thecarrier 10 relatively to the yoke mem- In the modified form shown inFigures 9 to 11 it is not necessary to detach the mounts 12 from thecarrier as in this construction the transverse members. 11 are inengagement with the respective apertures 46 only during the extremeretracted position of said mounts, whereupon the rear ends of saidtransverse members are received into said apertures.

The advantages of my dust collector reside not only in the fact thatfine particles of abrasive material and metal are prevented fromsettling on various parts of machinery but chiefly in the-fact that theinjurious dust or matter is prevented from being released into theatmosphere so that the workman is not exposed to the danger of inhalingthis dust. As said dust consists mainly of fine particles of abrasivematerial and metal and as the grinding or honing operation is carried onin a dry state, it is readily'apparent that unless such dust is confinedthe workman is exposed to considerable hazard with regard to his health.

By the use of my exhausting system the dust is confined before it has achance to escape to the atmosphere, thereby safeguarding the health ofthe workman and eliminating troublesome dust conditions in the shop.

My dust exhausting system is designed primanly for use in conjunctionwith cylinder grinders or honing apparatus but it is equally as welladaptable for use in connection with other forms of apparatus wherein itis desired to collect dust or other injurious matter and prevent it frombeing released into the atmosphere.

The dust collector encloses the grinder and member 25 and the-interiorof the collector is under suction so that hardly any dust can escapethrough the lower end of the cylinder.

Therefore, while it is advisable to cover the bearings of the crankshafts as a precautionarymeasure, it is not necessary to go to extremelengths in protecting such bearings when my dust collector is used.

My device is of simple construction, will successfully exhaust the dustreleased by the grinding operation, and is arranged in cooperativerelation with the-grinder and movable therewith so that it is alwaysready for use.

While I have shown the preferred form of my invention, it is obviousthat various changes and modificationsin the embodiment of my dustcollector can be made and substituted for those herein shown anddescribed without departing from the spirit of my invention.

I claim: 4 I

1. A dust collector comprising a casing adapted to receive a cylindergrinder carrier and having peripheral outwardly presented pockets forreceiving the mounts extensibly mounted on said carrier, an elbow memberconnected to one end of said casing, and a flexible conduit leading fromsaid elbow member to a suitable exhaust apparatus whereby air can beexhausted from said casing, the latter being provided with a pluralityof inlet openings arranged adjacent to said mounts to admit air and dustinto the interior of said casing.

2. A dust collector comprising a casing for enclosing a carrier andhaving its periphery provided with a plurality of outwardly presentedpockets for receiving the cylinder engaging elements carried by saidcarrier, said casing having the lower end closed, an elbow member havingone end flexibly connected to the upper end of said casing, and aflexible conduit connected to the other end of said elbow for exhaustingair from said casing, the latter being provided in its .walls with inletopenings through which air and dust is sucked into said casing.

3. A dust collector comprising a casing for enclosing a cylindergrinder, said casing being provided in its periphery with outwardlyopening vertically disposed recesses for receiving the adjustablecylinder engaging elements carrying mounts, there being inlet openingsformed in the peripheral wall of said casing in close proximity to saidpockets through which dust and air is admitted into said casing, and "anexhaust conduit flexibly connected to and leading from said casing forconveying away the dust sucked into said casing.

4. A dust collector comprising an elongated casing having a bottom walland an open top, said casing being adapted to receive a cylindergrinder, the peripheral wall of said casing being formed with aplurality of circumferentially spaced outwardly opening recesses forreceiving the mounts carrylng the cylinder engaging elements, the trans--verse members of said mounts extending inwardly through suitableopenings formed in certain walls of said recesses and engaging saidcarrier, and an exhaust conduit flexibly connected to the upper end ofsaid casing for producing suction therein, the peripheral wall of saidcasing being provided with a plurality of inlet openings whereby dustproduced by the operation of the grinder is sucked into -said casing andconveyed away through said conduit.

5. A dust exhausting apparatus for cylinder grinders comprising anelongated casing adapted to receive a cylinder grinder, a bottom wall insaid casingand provided with a seat for receiving the lower end of saidgrinder, the peripheral wall of said casing being provided with a seriesof longitudinally disposed pockets adapted to receive the cylinderengaging elements of the grinder, there being inlet openings formed inthe peripheral wall of said casing adjacent to said pockets, .and anelbow member flexibly connected to the upper end of said casing and incommunication with suitable exhaust means whereby suction is produced insaid casing and dust and air is sucked thereinto through said inletopenings.

6. A dust exhausting apparatus for cylinder grinders comprising acylindrical casing adapted to receive a cylinder grinder, said casinghaving its lower end provided with a bottom member and having an openupper end, the peripheral wall of said casing being provided withlongitudinally disposed outwardly presented pockets for receiving theelements carrying mounts, said peripheral well being provided with inletopenings immediately rearwardly of said mounts whereby fine particles ofmaterial released by the operation of the inder are sucked into saidcasing through said inlet openings, and means connected to the upper endof said casing for exhausting air and dust therefrom.

7 A dust collector of the class described comprising in combination acylindrical casing provided in its periphery with a series oflongitudinally disposed outwardly presented pockets and having aplurality of inlet openings arran ed ad acent to said pockets,.an elbowmem er spaced from the upper end of said casing, a flexible conduitleading from one end of said elbow. to asuitable exhaust apparatus, anda conduit section detachably engaging the other end of said elbow andthe upper end of said casing to provide flexible comprising acylindrical casing having a connection therebetween whereby suction isproduced in said casing and dust and air is sucked thereinto throughsaid inlet openings and conveyed away through said flexible conduit.

8. A dust collector of the class described chamber adapted to receivethe carrier of a cylinder inder and having its peripheral wall providedwitha series of outwardly presented longitudinally disposed pocketsadapted to receive the extensible parts of said grinder, there beinginlet openings formed 1n said peripheral wall adjacent to said pock; etswhereby air and dust is sucked into said casing, and means connected toone end of aid casing for exhausting air and dust there- 9. A dustcollector of the class described comprising in combination with acylinder grinder, of a cylindrical casing enclosing said grinder andprovided in its 1peripheral wall with a series of longitudinal ydisposed outwardly presented pockets for receiving the expansible mountsof said grinder, said rifpheral wall being provided with a plurahty ospaced inlet openings arranged adjacent to said pockets and throughwhich air and dust is drawn into said casing.

10. A dust collector of the class described comprising in combinationwith a cylinder grinder, of a cylindrical casing enclosing said grinderand provided in its peripheral wall with a series of longitudinallydisposed outwardly presented pockets for receiving the expansible mountsof said grinder, said peripheral wall being provided with a plurality ofspaced inlet openings through which air and dust is drawn into saidcasing, the lower end lower end of said casing, andia conduit flexiblyconnected to the upper end of said casing and adapted to be connected toa suitable suction apparatus to produce suction in said v casing.

12. In a dust collector of the class described, the combination with acylinder grinder, of a cylindrical casing enclosing the body portion ofsaid grinder and provided with a series of longitudinally disposedpockets for rceiving the mounts of said grinder, there being openingsformed in certain Walls of said pockets through which the rack portionsof said mounts extend inwardly into the body portions of said grinder,the peripheral wall of said casing being provided with a plurality ofinlet openings arranged adjacent to said pockets whereby air and dustare drawn into said casing, the lower end of said casing being closed,and a tubular extension posed pockets for receiving the expansible,

mounts of said grinder, there being inlet openings formed in theperipheral wall of said casing through which air and dust is drawnthereinto, a member for closing the lower, end of said casing, a conduitflexibly connected to the upper end of said casing and adapted to beconnected to a suitable suction apparatus to produce suction in saidcasing, the lower end of said casing being closed and provided with acentrally disposed seat in which is arranged a longitudinal extensionprojecting downwardly from the lower end or the body ortion of saidcylinder grinder. 14. In a evice of the class described, the combinationof a cylinder grinder having an actuating spindle extending upwardlytherefrom, a cylindrical casing enclosing said cylinder grinder andprovided in its peripheral wall with a series of Ion 'tudinally disposedpockets for receiving t e mounts of said grinder, there being suitableopenings formed pockets through elbow conduit connected to the upper endof said extension and provided with a bearing through which said spindleprojects outwardly from said conduit.

15. In a device of the class described, the combination with a cylindergrinder, of a cylindrical casing enclosing said grinder and having aclosed lower end and provided in its peripheral wall with a series oflongitudinally disposed pockets for receiving the mounts of saidgrinder, certain walls of said pockets being provided with suitableopenings through which the rack portions of said mounts extend inwardlyinto engagement with the body portion of said grinder, there being inletopenings formed in the peripheral wall of said cylindrical casingthrough which air and dust are drawn into said casing, an

elbow conduit in communication with the upper end of said cylindricalcasing and adapt ed to be connected to a suitable suction apparatus forconveying away air and dust from said casing, and a tubular bearingarranged in said elbow conduit coaxially with said cylinder grinderthrough which the actuating portion of said grinder extends outwardly. u

16. In combination with a cylinder grinder comprising grinding elementsadapted to be rotated over the cylinder wall and a shaft for supportingand actuating said grinding elements, a dust collector for said grindercomprising a casing having a rotatable portion mounted on said inder anda nonrotatable portion extending outwardly therefrom and havin a swivelconnection therewith, and a bearing in the non-rotatable portion for thegrinder shaft.

17. In combination with a grinding machine for engine cylinderscomprising grinding elements adapted for rotation over the cylinderwall, a dust collector comprising a casing operatively connected withthe grinding machine, a drive shaft for the inding machine passingthrough said casing and having a bearing therein, and a flexibleconnection from the casing to a suitable exhausting device. I

18. In combination with a cylinder grinding machine for enginecylinders, said machine including laterally extending revoluble grindingelements, a dust collector comprising a casing in cooperativeassociation with said grinding machine, a drive shaft for. the grindingmachine passing through an opening in said casing, and a conduit leadingfrom the casing to a suitable exhausting device.

19. In combination with a cylinder grinding machine for enginecylinders, said machine including laterally extendedrevoluble grindingelements, adust collector comprising a casing in cooperative associationwith said grinding machine, a drive shaft for the rinding machinepassing through an openmg in said casing, and means for maintaining saidopening closed against excessive air leakage. 4

20. In combination with a cylinder grinder comprising grindin elementsadapted to be rotated over the cylinder wall and a shaft for supportingand actuating said grinding elements, a dust collector for said grindercomprising a casing adapted to be disposed within the cylinder andwithin the margins of the abrading surfaces of said grinding elements,suitable connectors between grinding elements and shaft, said connectorspassing through the casing, and said drive shaft passing through thecasing.

21. The combination of a cylinder grinder and a dust collector thereforcomprising a casing adapted" to enter the cylinder, grinding elementsarranged on the outside of the casing, a carrier member on the inside ofthe casing for the grinding elements, connectors between the grindingelements and carrier, said connectors passin through the casing wall,and a drive shaft or the carrier passing through the casing.-

22. A dust exhaust apparatus adapted for ing an open top casing ofgeneral cylindrical shape and insertible in a' cylinder, said casinghaving openings in its side wall for receiving supporting elements ofthe grinder,

and other openingsto receive the grinding ust.

23. In combination with a cylinder grinder havingabrasive elementsadapted for linear contact with the cylinder wall and means foractuating said elements, a dust collector comprising a casing within themargins of the abrasive elements and enclosing said actuating means,said casing having air and dust inlet openings adjacent to the abrasiveelements.

In testimony whereof I hereunto atfix my signature this 17th day ofMarch, 1930.-

,EJOSEPH SUNNEN.

